21259600

素因数分解:

$2^4\times 5^2\times {\mathrm{53149}}^1$

素因数の和:53167

約数の個数: 30

約数和(自身を含む): 51077150

約数和(自身を除く): 29817550

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 53149, 106298, 212596, 265745, 425192, 531490, 850384, 1062980, 1328725, 2125960, 2657450, 4251920, 5314900, 10629800, 21259600]

約数ペア:

[(1, 21259600), (2, 10629800), (4, 5314900), (5, 4251920), (8, 2657450), (10, 2125960), (16, 1328725), (20, 1062980), (25, 850384), (40, 531490), (50, 425192), (80, 265745), (100, 212596), (200, 106298), (400, 53149)]